Fuel-burning device



March 27, 1928. 1,664,276

w. w. WILLIAMS 7 FUEL BURNING DEVICE Filed July 5, 1924 v s sheets-sneak 1 54 IE I 191a 46 H| Ill :1 -42 E5", 2129 3 16 5 11Hv 3 5 [III Ill March 27,1926. 1,664,276

w. w. WILLIAMS FUEL BURNING DEVICE Filed July 5, 1924 s Sheets-Sheet 2 E i-q ZZ-7,3. EB 555 March 27, 1928. Q

FUEL BURNING DEVICE Filed "July 5. 1924 w. w. WILLIAMS 3 Sheets-Sheet 3 Patented Mar. 27, 1928.

UNITED STATES PATENT oFFlcE.

WALTER W. WILLIAMS, OF BLOOMINGTON, ILLINOIS, ASSIGNOR T WILLIAMS OIL-O- MA'IIC HEATING CORPORATION, BLOOMIN'GTON, ILLINOIS, A CORPORATION OF ILLINOIS.

FUEL-BURNING DEVICE.

Application filed July 5, 1924, Seria1- No. 724,298.

,My invention relates to liquid fuel burners and more particularly to a fuel burner adapted for installation in large heating plants, this type of device being. usually referred to as an industrial burner.

The object of my invention is in the provision of a liquid fuel burner utilizing a single power element to operate the various w devices utilized in the atomization of the fuel.

Another object of my invention is in the provision of a separator member wherein both fuel and air are contained under presmay be supplied by a constant .sure, the pressure of the air and the supply of fuel being maintained 111 a uniform man-.

ner by special automatic mechanism.

'Still another object of my invention is in the assembly of an air compressor, fuel pump and fan blast upon the extended power shaft of an electric motor, said portions cooperating with a separator chamber and automatic mechanism whereby a fuel supply and uniform air discharge, as well as an additional draft from the fan blast.

A further object of my invention lies in the use of an' air compressor in connection with a separator chamber containing a constant amount of liquid fuel, and automatic means for utilizing a portion of the fuel to lubricate the air compressor.

A still furtherobject of my invention is in the provis on .of a separator chamber containing an automatic valve mechanism adapted to control and maintain a constant supply of fuel in said chamber.

Yet another object of 'my' invention. lies in the provision of a separator memberwherein a constant'supply of fuel is main tained, as well as an automatic means for maintaining a uniform air pressure therein.

Other objects of my invention will appear in the following specification and claim burner jet Fig. 5 is a side elevation showing a modification of my burner.

Fig. 6 is a side elevation. of one of a series of jets used in connection with the burner unit; and,

Fig. 7 is a cross sectional view showing in detail the air compressor. Referring to the drawings I have shown an electric motor 10, said motor providing the power means for my fuel burning device. The power shaft of the motor 10 is extended at-either side in a manner to be used as a propelling agent for the portions now to be described. Mounted upon one of the ex tended ends of the power shaftis a fan member 11, said fan being enclosed by a casing 12. As seen in the various figures of the drawings this casing 12 is cast in two parts,

these parts being united by a series of bolts necessary air.

Mounted upon the extended power shaft at the other side of the electric motor is an air compressor generally referred to as 17. This air compressor 17 is mounted adjacent the face of the electric motorlO and is attached or rather its inner face 18 is attached to a projecting bracket 19 upon the motor 10. The air compressor is made up of the following elements. An outer face plate 19" is connected to the inner plate 18 by means of a plurality of transversely extended bolt members 20. A casing or housing member 21 is supported by the opposed plates 18 and I 19 and has its outer surface flanged as shown at 22, this fianging acting as an air cooling means for the air compressor. For a more detailed disclosure of the inner elements making. up the air compressor a reference is made-to figure 7 wherein a rotor 23 is shown positively connected to the propeller shaft 24'. This'rotor has an eccentric mounting with relation. to the outer casing 21. The rotor 23 has a series of grooves 25 in which are disposed slidable vane members So far I have described the fan'and'air. compressor, both being mounted upon the This shaft, howdisclosing the automatic. means taining in a constantmanner the fuel supmeans of the bolt members 32.

Acting as a supporting means the elements above described in a rectangular container 33, said container being more properly referred to as the separator chamher. This separator chamber 'is shown in detail in Fig. 4 of the drawings, said figure for mainply in the separator chamber. Attached to the separator chamber is a head portion 34 wherein is contained a portion of the automatic valve mechanism later to be described,

as well as the fuel supply pipes for the separator chamber. It might be well at this time to describe the fuel flow to the separator chamber.

The present device is of course adapted to withdraw its fuel supply from a large con-j tainer and these containers being so well known that no disclosures is here made other than the fuel pipe 35 which is connected at its upper end to the fuel pump 30. Movement of the fuel pump withdraws fuel from the container through pipe 35 and forces the c fuel through pipes 36 and 37 to the separator chamber. The above passage of the 'fuel takes place when the automatic valve mechanism in the separator is in an unseated position, however, should the valve be seated then a pressure is built up" against the adjustable pressure valve 38 until said valve is opened ,whereafter the fuel is per mitted to flow through the pipe 39 and as' a matter of fact back to the original'con- ,tainer.

Referring again and more specificallyto the automatic valve mechanism in the separator chamber, a reciprocating valve 40 is adapted toseat or not seat upon the inner' projecting end of the fuel pipe 36, at a point 41. Means for moving the valve 40 is provided in a crank lever 42 pivoted at 43. One arm of the cranklever 42 has attached theretoa rod 44, said rod being connected at its outer end to a conventional float member 45. I Relative to-the controlof the fuel supply inthe separator chamber it may be, said that when the fuel level is lowered, n'at'urally'the float also is lowered with the result that the valve 40 is unseated and fuel permitted to flow through the inlet pipe 37 into theseparator chamber. This raising of the fuel level'due tothe admission of more fuel will tend to raise the float with the result that thevalve 40 will be seated and the fuel flow for all of supply Within pressure becomes excessive,

cut off when the proper fuel level ,in the separator is reached.

Although I have-described in detail the air compressor I have not -made clear its operation with relation to the separator chamber. An air port or muffler is shown at 46 through which air at ordinary pressureis withdrawn due to the movement of the eccentric rotor in the air compressor. This air passes thru the pipe 47 directly into theair compressor where it is placed under compression and discharged" thru pipe 48 into the upper part of the separator chamber. Continuous operation of this air compressor creates a considerable pressure above the fuel said separator and normally the compressed air when the desired pres: sure has been reached is taken off thru the operation of ,air pressure, in case more than the desired pressure is created within the separator chamber a relief air pressure valve 52 will be operated to permit the valve 53 therein to rise and release the excess air into the air intake pipe 47 In other words when the air this relief valve 52 operates to relieve the pressure, by-passing the excess air back into the air compressor. I j

We can see from the above that an automatic control means is provided for maintaining a uniform air pressure just as was done with relation to the fuel supply in the separator chamber, A further consideration of Fig. 7 will show that thisv air compressor will when in constant use require some lubrication due to the fact that the sliding vanes have a fric-- tional engagement with the inner wall of the housing 21. An automatic means is provided for lubricating the compressor chamher, the lubricating element being none other than the fuel utilized by the device; A small fuel line 54 is projected below the fuel burner jet later to level in the separator chamber, said fuel a line passing thru the upper. side of the separator chamber, through a sightfeed member 55, thence thru another fuel lead 56 and. I

finally into the air compressor chamber itself. We may see from the above that movement of the'rotor in the air compressor induces a small amount of fuel thereto, this small amount being sufficient to keep the air compressor lubricated at all times, so that as long as the motor operates the air-compressor the constant stream of oil entering thecompressor through pipe 54 will be mixed with the air. drawn into the compressor and delivered therefrom into the chamber '33 where the air and oil are separated-and'for this reason this chamber is termed a separator chamber.

So..far. I have described the passage of the fuel and air into the separator' chamber and finally out the pipes 50 and 51, 50 referring to the air discharge pipe and 51 to the fuel discharge pipe.

Referring now to Fig: 6 we see that these two pipes 50 and 51 are tapped'as at 57 and 58 for fuel and air supply to the burner jet generally described as 59.

It might be said at this time that the present unit is devised to take care of a series of jets as shown at 59 tapped from the main fuel and air pipes 50 and 51 respectively, such air and oil supply'being suflicient to take care of a single jet as is shownin detail in vFig. 6. The air and fuelfrom pipes 57 and 58 are united in a single pipe 60 and passed in such state to the discharge jet 61 where the resultant mixture is blown out with a whirling motion. 1

Just as the air and fuel main pipes are tapped to supply a single burner jet, the fan blast passing thru the housing 62 is tapped to supply additionaldraft to the jet 61. The above is accomplished by means of the housing 63 which is fashioned at its outer end in a manner to discharge-air at a point adjacent the jet 61. The spiral 64 gives to the discharged air from the draft tube 63 a whirling motion to assist in the further atomization of the fuel mixture discharged from the jet or nozzle 61.

Referring to the modification of my device shown in Fig. 5, in view of the former description, it is not thought necessary to go into too great a detail in view of the fact that but a very few changes have been made. For instance, instead of having the fuel discharged into the separator chamber through the pipe 37 this pipe 37 is extended as at 65 and the fuel is forced into the air intake pipe 47 for the air compressor. In other Words fuel is supplied with the air to the air compressor and the air compressor does not discharge merely air under compression but mixes and compresses both the air and fuel, with the result that a frothy mixture under considerable pressure is-forced into the separator chamber where the air and oil are separated from the frothy mixture. The above is the only change in the device inasmuch as the operation after the frothy mixture of air'and fuellis discharged into the separator chamber is thesame, the fuel taking its position at the bottom and maintaining a constant level and'the air being under.

a uniform pressure thereabove.

The operation ofmy device is as follows: Movement of the electric motor transmits similar movement to the fan member, air

compressor chamber and fuel pump. Fuel is therefore fed-to the separator chamber or if there is the desired fuel'level-in the separator chamber the fuel will pass thru the overflow pipe 39 back to the original conwill result in the co-mingling of the air and,

fuel in the pipes 60 and the consequent discharge of the resultant fuel mixture from the jet 61. The additional draft is provided by the tapping of the main draft or blast tube 62 by means of the draft housing 63. A spiral portion 64 is adapted to give a whirling movement to the discharged air adjacent the jet 61.

A means for throttling the device or rather the flame when the fuel mixture is ignited, is provided in the valve members 66 and 67 Although the present device is adapted to burn or rather utilize a very heavy fuel nevertheless when an extra heavy fuel is used some means may be necessary to heat the fuelforthe purpose of thinning it. I have provided a steam coil 68 within the separator chamber to accomplish the above required.

result.

What I claim is a p In a liquid fuel burning device, an air compressor, a liquid fuel pump, an air blast fan and electric means for operating the same, an accumulator chamber having an air intake pipefrom the air compressor and a fuel intake pipe from the pump and having an air discharge pipe and a fuel discharge pipe leading from said .chamber to the burner nozzle, automatic means for maintaining a constant supply of fuel and a uniform pressure of air in said chamber including a float operated'valve in the fuel intake pipe and a by-p'ass including a pressure valve leadingfrom the air discharge pipe to the intake of the air compressor, and means for lubricating the air compressor by the liquid'fuel comprising a pipe leading from the bottom of the said chamber to the air 1 compressor whereby the internalpressure in f said chamber discharges liquid fuel to the interior of said air compressor which fuel after passing through the workingparts of said air compressor is returned to the chamber with the air under compression'through the pipe from the compressor to the chamber. In testimony whereof, I have aflixed my signature.

WALTER w. WILLIAMS. 

